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xvi                  THE LONG-EARED AND OTHER BATS                529
The genus Vespertilio contains some forty-five species, and is
world-wide in range. It has one more premolar in the upper
jaw than has Vesperugo. There are no less than six British
species, of which V, murinus is the largest species of Bat recorded
from this country, but is not quite certainly indigenous.
Plecotus has very long ears. The dentition is I - C -J- Pm -f- M --.
The tragus is very large. There are but two or possibly three
species, of which one is North American, and the other is the
Long-eared Bat, P. auritus, of this country., but ranging as far as
India. The shrill voice, inaudible to some ears, of this Bat has
been heard of by everybody.
Synotus includes the British Barbastelle, S. "barbastellus, as
well as an Eastern form. It differs from the last genus principally
by the loss of a lower premolar. The ears, too, are not so large.
Qtonyeteris, JNyctophilus, and Antrozous are allied genera; the
last is Californian, the others Old-World forms.
ICerivoula, (or Cerivoula) has a long, pointed, narrow tragus.
The tail is as long as or longer than the head and body. The
dentition is as in Vespertilio ; but the upper incisors are parallel
instead of divergent as in that genus. The brilliantly-coloured
K. picta is, on account of this very fact, the best-known species.
The name Kerivoula, a corruption of the Oinghalese " Kehei vulha,"
signifies plantain bat. This Bat has been described as looking,
when disturbed in the daytime, more like a huge butterfly than a
Bat, which is naturally associated with sombre hues. Other
species occur in the Oriental, Australian, and Ethiopian regions.
Miniopterus has a premolar less in the upper jaw; it lias a
long tail as in the last genus. One species, M. scheibersi, has
almost the widest range of any Bat, it being found from South
Europe to Africa, Asia, Madagascar, and Australia,
Natalus is an allied form from Tropical America and the "West
Indies. It is chiefly* to be separated from K&rivoula. by the short
tragus to the ear.
Thyroptera is also South American. It is distinguished by
the curious sucker-like discs upon, the thumb and foot. These
"resemble in miniature the sucking cups of cuttle-fishes." The
Madagascar genus, Myxopoda, with but one species, has also an
adhesive but horse-shoe-shaped pad upon the thumb and foot.
Scotopliiltts has shortish ears with a tapering tragus.     The tail
is shorter than the head and body, and is nearly contained within
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